Sign-painting machine.



PATBNTED MAY 7, 1907.

W. A. AUGUSTINE.

SIGN PAINTING MAGHINB.

APPLIOATION FILED MAR. 28, 1906.

WITNESSES.- gawk...

ATTORNEY.

U ITE STATES PATET IQIE.

SlGN-PAHNTING MACHENEH Specification of Letters Patent.

Patented May 7, 907.

A li ati fil d March 28,1906- Serial No. 308,380.

To all whom it'mwy concern:

Be it known that I, WALTER A. Aueus- TINE, a citizen of the United States, residing at Alameda, in the county of Alameda and State of California, have invented certain new and useful Improvements in Sign-Painting Machines, of which the following is a specification.

The object of this invention is to provide afg'machine for painting sings on boards or other suitable material, sothat such signs can be painted rapidly and cheaply, and upon warped or uneven surfaces as well as upon even surfaces; also a machine by which parti-colored color signs can be painted; also by which two or more signs can be painted at each revolution of the machine".

In the accompanying drawing, Figure 1 is a side elevation of the machine, certain parts being broken away; Fig. 2 is a broken bottom plan view thereof; Fig. 3 is a view similar to Fig. 2 of a modification; Fig. 4 is a sectional view of the sheet for producing the impression.

Referring to the drawing, 1 represents a frame having a top 2 and side bars 3. Mounted in bearings on side frame is a driving shaft 4, carrying a gear 5, meshing with a gear 6 upon a shaft 7, mounted in bearings onthe side bars 3, said shaft 7 carrying a paint roller 8.

Upon the top of the frame 1 is mounted an auxiliary frame 9 in which are slides 10 forming the bearings of the shaft 11 of a feed roller 12. Said slides and therefore also the feed roller 12, are pressed downward toward the painting roller 8, by means of springs 13 compressed between the top of the frame 9 and collars 14 secured by set screws 15 upon threaded rods 16. By means of handles 17 said rods are screwed through said slides 10, but pass loosely through the frame. By turning the rods in said slides the collars can .be moved to or from said slides, thus varying the degree of pressure with which the feed roller bears down upon the painting roller.

The board which is to be painted, shown at 19, rests upon a table 20, the end of which is raised by means of the screw 21. Said table is provided on one side with a wall 22; on the opposite side with a guide 23 adjustably secured in a transverse under cut groove transferred to a sheet of composition molded upon a backing of paper 64, thus producing a negative of thesign. Then part of said sheet of composition is cut away along the outline of the sign. If the sign is to be painted in relief, then the part of the composition outside the outline is removed. If in intaglio, then the part Within the outline is removed. This backing of paper having thereon the sheet of composition, with the negative of the sign thus formed thereon, is then secured to the painting roller.

The paint is distributed upon the painting roller by a distributing roller 30, also formed With a rim 31 of yielding composition, and having its shaft 32 in bearings 33 slidably mounted upon the side bars 3. Said distributing roller is pressed against the painting roller by means of coiled springs 34 compressed between the frame 1 and collars 35 secured upon rods36 screwed through lugs 37 standing. from said bearings. Said rods are provied with handles 38 by which they can be turned, so that the position of the collars relatively to the lugs can be adjusted, and thereby the pressure of the compressed springs can be varied- In this way the distributing roller is maintained firmly pressed against the painting roller. It is of great importance that these two rollers should be driven with absolute uniformity, and, for this purpose, from the shafts of said rollers extend arms '39 connected by a link 40 and carrying at their ends bearings for shafts 41, 42 of gears 43, 44, meshing with each other, and also meshing respectively with the gear 6 on the shaft of the painting roller, and with a gear 45 on the shaft of the distributing roller, said gears being of the same size. By this means the painting and distributing rollers are driven in unison, so that there is no slipping of one roller upon the other.

The paint is supplied to the distributing roller from a paint trough 47, in which is a supply roller 48 the shaft of which has bearings in the lower ends of hangers 49 slidable u on the frame to and from the distributing r0 er, the trough being also supported by arms 50 from said hangers. Through'said hangers are screwed rods 51 having collars 52 secured,

thereon between which collars and the frame are inte osed compressed springs 53, which thus tedd to force said su ply roller against the. distributing roller.

In Fig. 2 is shown the arrangement usedi when it is desired to paint two signs of different colors in one revolution of the painting In such case the distributing rollers 'each other, links between the ends of the roller.

" carry two pairs of peripheral cams 57 58, the

cams of one pairlying outside the cams of the other pair.

by the inner pair of cams, so as to be raised thereby from the surface of the distributing roller, being permitted to return into contact with the surface of the distributing roller when said cams pass from said su ply roller, the shaft of said roller not being t en in contact with the other pair of cams. The other supply roller is provided with grooves 59 which enable the surface of said su, ply roller to avoid the inner pair of cams, whi e yet said surface is engaged by the outer pair ofcams and is raised by them out of contact with the surface of the distributing roller. This permits of two signs being secured upon the painting roller, one of them being paintedby the paint received from the supply roller 48, and the other by the paint received by the supply roller55. It will be observed that the two airs of cams overlap peripherally at their en s, so that the corres onding portion of the periphery of the distri uting roller receives aim of neither color.

In t e modification shown in Fig. 3, the cams are not used on the distributing roller, and the two supply rollers contact with the surface of the distributing roller on opposite sides thereof, andto a certain extent overlap, so that, while the top of the sign is painted one color, and the bottom another color, the intermediate part is painted a mixture of the two.

60 is a spreading roller, its shaft being mounted in brackets 61 dependin from the side bars 3, and pressed against t e distribhe handles 54 facilitate the turningof the rods whereby the compression of said springs may be varied.

It is One of the supply rollers 48 isshorter than the other roller, and is engaged uting roller in the same manner-as the supply rollers.

In order to justify the front end of the sign painted on the board there is provided a spring stop 62 in a recess 65 in the periphery of the printi'ng'roll. When the end of the sign is passing beneath the feed roller, said stop can move back as much as is necessary into said recess so as to prevent any undue pressure between said feed roller and the painting roller. l

I claim 1. In a machine for painting signs, the combination of a painting rol having a yielding surface, a' backing of thin but inextensible material secured to said roll having secured thereon a thicker sheet of composition; a part being cut away to form a negative of the sign to be painted, a distributing roll contacting with the paintin roll, means for pressin the distributing rol against the painting r0 1, and means for causing said rolls to revolve in unison comprising gears on the shafts of the rolls, pinions respectively meshing with said gears and also meshing with shaft of the inions, and a link between the shaft of each pinion and that of its corresponding gear, substantially as described. 2. In a machine for paintin signs, the combination of a painting rol having a yielding surface, a backing of thin but inextensible material secured to said roll and having secured thereon a thicker sheet of composition; apart being cut away to form a negative of the sign to be painted, means for distributing paint upon said roll, and meansfor passing a board into close contact With said roll to take the impression therefrom, substanti ally as described.

3. In a machine for painting signs, the combination of a painting -rol having a yielding surface, a backing of thin but inextensible material secured to said roll and having secured thereon a thicker sheet of negative of the sign'to be painted, means for distributing'paint upon said roll, com rising a distributing rolla'and ositive means "or causin said painting an distributing rolls to revo ve in unison, and means for passing a board 'into'close contact with said roll to take the impression therefrom, substantially asdescribed.

4. In a machine for paintin signs, the combination of a painting rol having a yielding surface, a s eet of yielding material secured to said roll and having a part; cut away to form a negative of the sign-to be painted, means for distributing paint upon said :roll, comprising a distributing roll, means for pressing said distributing -roll against the painting roll comprising movable ssaeee $33 bearings for the shaft of the distributing roll, with said roll to take the impression there- 10 springs pressing against said bearings, and from, substantially as described.

means for adjusting said springs, comprising In Witness whereof I have hereunto set my' collars against which the springs abut, hand in the presence of two subscribing Witthreaded rods through collars for said rods nesses.

and means for turning said rods in said bear- WALTER A. AUGUSTINE. ings, means for causing said painting and Witnesses: distributing rolls to revolve in unison, and i BESSIE GORFINKEL,

means for passing a board into close contact HAZEL RIVERS. 

